Google Keep is my go-to app for writing short notes and setting reminders for myself. I've also used it as a mindmapping tool from time to time. Today, Google Keep for Android got a huge update. You can now draw notes in the app. To draw a note just open the app and tap the pen icon to start drawing. You can also add a drawing to a text, image, or voice note. To add drawings to an existing note tap the three dots in the upper-right corner of the screen and select "add drawing."
Google Keep is available also available as a website, as a Chrome app, and as an iOS app. Unfortunately, while you can view drawn notes in those other apps, you cannot create new drawings in the non-Android versions of Google Keep at this time.
Applications for Education
Google Keep is a great app for creating to-do lists and reminders. Google Keep lets users share notes just like sharing Google Documents. In that regard it's great for keeping track of to-do lists in team projects.
Drawing notes in Google Keep could be a great way for students using Android tablets and larger Android phones to sketch mindmaps or flow charts. It could also be a good place for students in mathematics classes to take notes on how to solve a particular type of problem.